Multiple-drilling machine.



' Gv 'Tl JR MULTIPLE omuma MACHINE.

APPLICATION FILED FEB. 2, l9|6- I Patented Apr. 80, 1918.

I 4 SHEETS-SHEET l- G. T. TRUNDLE, JR.

MULTIPLE DRILLING MACHINE.

APPLICATION HLED FEB 2, 1915.

Patented Aprr30, 1918.

4 SHEETS-SHEET 2..

q Q I AUJQIWOI G. T. TRUNDLE, 1R. MULTIPLE DRILLING MACHINE.

APPLICATION FILED FEB. 2.1916.

4 SHEETS-SHEET 3.

TRUNDLE, JR; MULTIPLE DRILL'E NG MACHINE.

APPLICATION FILED FEB- 2.19m.

Patentd Apr. 30

4 SHEETS-SHEET 4.

Ill

' ence being had to the accompanying draw- GEORGE T. TRUNDLE, .13., 0FCLEVELAND, OHIO, ASSIGNOR TO THE AMERICAN MULTI- GRAPH COMPANY, OFCLEVELAND, OHIO, A CORPORATION OF OHIO.

MULTIPLE-DRILLING MACHINE.

Specification of LettersPatent. Patented Apt. 39, I91- Application filedFebruary 2, 1818, Serial No. 75,639.

'Jr., a citizen of the United States, residing at Cleveland, in thecounty of Cuyahoga and State of Ohio. have, invented a certain new anduseful Improvement in Multiple- Drilling Machines.'of which thefollowing is a full, clear, and exact description, referings.

Thisv invention relates to a machine for drilling into suitable stockfrom different directions. The object of the invention is to provide amachine of. this class which while being simple in construction shall beaccurate and rapid in operation, receiving the blanks, drilling them,and discharging them, in quick succession. The invention is hereinaftermore fully described in connection with the embodiment shown in thedrawings. which is designed to drill inwardly from opposite sides, anddownwardly from above, into a blank, which in this particular instanceis shown as a small drum-shaped block. My invention provides meansfor..;quickly placing and clamping such block or blank; for drillinginto it simultaneously from different directions with a desired'numberof drills, so placed that they do not interfere with each other, andfor, discharging the drilled blank.

In the drawings Figure l is an end elevation of a multiple drillingmachine embodying this invention; Fig. 2 is a rear elevation ofsuchmachine, partly sectioned; Fig. 3 is a plan with the vertical drills andtheir supporting mechanism removed and with the feed magazine alsoremoved; Fig. 4 is an enlarged horizontal section on the line 4-4 ofFig. 1, illustrating the gearing for driving the individual verticaldrills from a common spindle, and intended to be illustrative of anynumber of individual spindles, driven by a master spindle; :Fig. 5 is avertical section illustrating the same feature; Fig. 6 is a detail ofthe feed magazine as indicated by line 6-6 of Fig. 1; Fig. 7

is a plan of the feeding mechanism, being an enlargement of the sameparts shown in Fig. 3; Fig. 8 is a similar view with the top platebroken away; Fig. 9 is a vertical section through the feeding mechanism,transversely of the machine; Fig. 10 is a fragmentary side elevation ofthe feeding mechanism, looking from the right hand end of the machine;Fig. 11 is a cross section of the feeding mechanism as indicated by thellne 11-11 of Fig. 7; Fig. 12 is a detail in plan of the feeding slide;Fig. 13 is a perspective view of a drum-like block after being drilledby particular machine shown in the drawing hereof.

The frame of my machine, as shown, conslsts of a suitable bed 10; a pairof castings or housings 11 and 12 secured to the top surface thereof,and a standard 13 rising from the rear portion of the bed andoverhanging the central portion thereof at a considerable distance aboveit. Each of the housings is formed with two alined bearings 15 and 16 1nwhich are journaled suitable horizontal spindles designated 21 and 22,respectively.

"The horizontal spindles ,carry suitable (lI'lll points 23 and 24," andare rotatable by suitable means, as for example, pulleys 25. The axes ofthe two spindles are preferably out of alinement, so that the drills maybe moved inward past each other to drill through an interposed blank.The

drawing shows the spindle 21 as located higher but in the same verticalplane as the spindle 22: while the'drill 23 is shown as considerablysmaller than the drill 24, though these details may be varied asdesired.

The driving pulleys 25 are shown as secured to sleeves 27 which projecttherefrom toward the center of the machine and have hearings in theouter standards 16 of the respective housings. These sleeves areconnected by a spline and groove with the spindles, which are shiftablewithin the sleeves. Accordingly, the spindles may be moved toward orfrom each other while they are rotating. to drill the interposed stock.The

mechanism for so moving them will be'hereinafter more fully described.

' On the forward face of the standard 13 is a boss 14 carrying averticalbearingBO. In this hearing is a sleeve 31 which has a splined connection33 with the hearing, so that the sleeve may shift longitudinally'but maynotv rotate. sleeve is an enlarged head 32. Rotatably jou'rnaled withinthe sleeve and head is a shaft 35.

On the lower portion of the shaft 35 and At the lower end of this Ioccupying a recess 34: in the head. 32, is a I Y mounted on a shorttransverse shaft 52, jourgearv 36. This gear meshes with pinions onsuitable arbors carried by the sleeve 30. Two of these arbors are shownin the drawing, designated 40 and 41, carrying vertical drills 42 and43, though it is to be understood that any desired number may beemployed. As will be seen from Fig. 5, each arbor has bearings bothabove and below its pinion 37', the upper bearing being in the head 32and the lower bearing in a plate 38 secured to the underface of thathead. By providing these two bearings for the arbor on opposite sides ofits pinion, its accuracy is insured. To take the thrust at the upperends of the arbors, I mount suitable screws 47 in the head 32, bearingaxially against the arbors. Each arbor has a suitable chuck at its lowerend, the arrangement shown consisting of a sleeve 48 screwing onto thearbor and having an overhanging, conical bore adapted to clamp againstthe conical end 49 of a split portion of the arbor.

The shaft 35 rotates freely within, the

sleeve 31 but is compelled to move up and down with it. The shaft isdriven by a suitable pulley 45, which is mounted on a sleeve 46journaled in a bearing 17 at the top of the standard 13, this slee ehaving a splinecl connection with the shaft.

It will be seen from the description so far given. that the twohorizontal drills 23 and 24 and the vertical drills 42 and 43 may all berotated simultaneously by means of the pulleys 25, 25 and 45; also thatall these drills may be caused to approach each other or recedetherefrom by means of moving their respective spindles 21, 22 and 35longitudinally. Mechanism is provided to shift all of these spindles atthe same time automatically under the control of a single operatinglever, and this mechanism will now be described.

Formed on the rear face of the sleeve 31 is a rack 50, with which meshesapinion 51 naled in the boss 14 projecting from the frame standard 13.On the external portion of the shaft 52'is a handle 54, by which thepinion may be rotated tov raise or lower the sleeve, and with it the sindle and the several vertical drills. An a justable collar 39 on thesleeve may limit the downward movement thereof, as desired.

Each of the horizontal spindles 22 and 23 is provided with a groovedcollar 60, located between the bearing standards 15 and 16. Into thegroove of each collar extends a pair of rollers 61 on a pair of upwardlyextending arms 62. The arms of each pair unite at their lower ends andare connected with a horizontal arm 63, the structure thus constitutinga bell crank, pivoted on the cross rod 65 extending crosswise of the bedand supported by it. The approximately I guided by the top plate ofthebed and at its upper end by the frame boss 14. Intermediately the rodextends through an. car 74 on the sleeve member 31, and is locked to theear, as, for example, by the collars 75 pinned to the rod above andbelow the car.

Whenever the sleeve 31 is operated by moving the lever 54 the rod 73 iscorrespondingly ralsed or lowered, and this rocks the bell crank andmoves the horizontal drills. Thus, a downward movement of the sleeve andvertical drills results in an inward movement of the horizontal drills,and vice versa. I

It will be noted that the arrangement above described, of simultaneouslyoperated horizontal and vertical drills, provides for drilling into ablock from opposite sides, and downwardly into its upper face. Suchdrills may thus produce the holes indicated at a, a a and a, in thearticle A shown in Fig. 13. In producing these holes the drumlikearticle stands on one of its flat faces,the two vertical drills 42 and43 drill into it froirr above, producing the holes a and a At the sametime the drill 23 enters from the right-hand side of the machine androduces the hole (1 while the drill 24 entermg from the left-hand side,produces the hole a. The horizontal drills may move past each othersutliciently to drill clear through the block at the same time that thetwo vertical drills straddle these horizontal drills and drilldownwardly from above.

In order to rapidly position the blank beneath the vertical drills andbetween the horizontal drills and'clamp it in place and remove it whendrilled, I provide mechanism which will now be described.

Rising from the upper surface of the bed 10 at its intermediateposition, and extending in a direction from front to back, are parallelframe ribs and 81, between which is an o'pening'82, through the bed.Secured in the groove between the ribs, and respectively in front of andbehind the hole 82, are liners 84 and 85. Resting on these liners is theslide (shown detached in Fig. 12), for supporting and positioning theblank A.

The blank is placed on the slide 90 at the rear of a shoulder 91thereon. Over the slide is a plate 94 secured to the frame ribs byscrews 95. Through the plate 94 in front of the drillingposition is anopening 96 or such size that the blank may ass through it. Pivoted tothe under side of the plate 94 (by vertical pins 97 passing into thatplate), are a pair of dogs 98, shaped like hell cranks and having theirproximate ends pressed to- I against their distant ends. The plate 94 isnarrowed at the rear of these dogs and at that position carries beneathit the abutment block 100. On opposite sides of this block are bars orribs 102 and 103, which have horizontal holes through them, designated104 and 105 respectively, for guiding the horizontal drills 24 and 23.The rib 103 is shown as secured to the under side of the plate 94, whilethe rib 102 is shown as consisting of the upward flange of an anglepiece secured to the frame rib 81-see Figs;

10 and 11.

The drum-like blank A is placed in the opening 96 and thus rests on topof the slide 90. Then this slide is drawn forwardly until the shoulder91 substantially alines with the forward face of the hole 96, whereuponthe blank drops onto the plate 90 at the rear of the shoulder and infront of the free ends of the. dogs. Then if the slide 90 be shovedrearwardly (toward the right in Figs. 7, 8 and 9), the blank is carriedpast the dogs and into engagement with the stationary abutment block100. As heretofore stated this block is carried by the plate 94, but itmay be accurately positioned by the screw 106, mounted in the standard13 and locked by the nut 107, adjustment being allowedby a slot in theplate 94 occupied by a screw 108 which holds the block.

By the movement described, the blank becomes locked in the desiredposition directly beneath the vertical drills and between the horizontaldrills. After these drills have acted on the blank the slide 90 is drawnforwardly. The dogs 98 prevent the blank moving with the slide, andaccordingly, the slide travels out from under the blank so that thelatter is free to drop into the hole 82 and be discharged. To insureagainst the sticking of the blank, ll provide at one side of the slide'90, a rearwardly extending bar 110, which carries a block 111 adaptedto engage the lower portion of the blank when the slide is drawn'forwardand thus tip it slightly, which is sufficient to'loosen it, allowing itto drop by gravity.

To cause longitudinal movement to the slide 90, 1 provide a stud 115extending from the front end of the slide 90, on-which 1 journal a hub116, from which extends a hand lever 117. The hub has an extension 118which has a cam face adapted-to en- Mounted in the plate 94 are devicesadapted'to press downwardly on the blank A and maintain it seated on theslide 90. In the construction shown each device consists of a ball 144,(Fig. 11), mounted in a cavity which has a restricted bottom opening,the ball being surmounted by a -compression spring, above which is ascrew 145 closing the cavity. i

I may provide a suitable magazine to automatically discharge the blanksinto the recess 96, or the operator may place them there by hand. I haveshown such a magazine consisting of an upwardly extending trough 130(Figs. 1, 6 and 9), having ears 131 by which it is held about the edgeof a bar 132, which is secured to the plate 94 and rises from it. Withinthe trough is placed a pile of blanks each resting on the fiat face ofthe blank below it, the bottom blank being directly over the opening 96into which it drops by gravity.

As shown, the blank to be drilled has through it a central,parallel-sided notch a, and to properly position this notch the bar 132has a rib 135 which occupies these notches in the surmounting blanks.The slide 90 may also'have at its-forward end a tongue 129, to occupythis notch, the tongue being provided with transverse holes for thepassage of the horizontal drills. Below the opening 82, through the bed,1 may place a suitably inclined chute or tray 140, for receiving thefinished articles.

In the operation of my machine the vaing 96. If this magazine is notemployed,

these blanks are. placed by hand in this opening. In any case theoperator draws forward on the handle 117 in its vertical position,bringing the slide 90 into position so that the blank drops behind theshoulder thereon, then he shoves rearward on the handle until the blankis substantially in position for action, then he turns the handledownwardly, causing the cams 115 and 120 to engage, thus forcing theblank snugly to its seat. The handle 54 is then operated moving therotating vertical drills downwardly and the rotating horizontal drillsinwardly. When the drilling operation is completed, the pinion 51 isrotated to withdraw the drills, and then the handle 117 is swung intoits vertical position and pulled bodily forward. This draws the slide 90out from under the blank, and block 111 knocks the blank loose (in caseit is "not free), and the drilled article drops through the opening 82onto the delivery slide 140.

said hell or thus my invention, claim is: ll 4'1 Adm q b la A .Le .JLLLG vUiiltJiLiaE/LGR G}. 1.4 6Q, e l/7C galls bJl. bearings carriedthereby, two spindles 1 l *1 mounted the respe ve pairs, COllfiiS onspindles between the bearings,

pair or bell cranks pivotally carried by the bed and extending upwardlybetween the bearings said ccl s, the other arms 's cxten i o inwardlytoward. each other, a a e device movable bodily in a vertical directionand engaging the two inner arms of said bell cranks.

2. lbs a drilling machine, the combination or two spindles at an angleto each other, means for concurrently rotating both spindles, saidspindles being mounted so as to be shiftable longitudinally, a bellcrank having one arm engaging a collar on one of the spindles, and amovable rod parallel with the other spindle and connected with the otherarm of said bell crank.

3. The combination of two drills, longitudinally shii'table spindlescarrying said drills, one of said spindles being provided with a rack, arotatable pinion meshing with said rack formoving the same, a collar onthe other spindle,'a bell crank having one arm engaging said collar, anda rod movable with the other spindle and connecting the other arm orsaid bell crank with said other spindle.

l. The combination of a pair of horizontal spindles, drill pointscarried thereby substantially facing each other, bearings in which thespindles are mounted and in which they may shift longitudinally, meansfor rotating the spindles notwithstanding their shifting, collars on thespindles between the bearings, a pair of hell cranks each having an armengaging one of said collars, the other arms of the bell cranksextending toward each other, a third drill spindle located substantiallyat right angles to the spindles already mentioned, means for rotatingsaid third spindle, means for feeding it toward a position between theother spindles, and a shiftable rod connected with said third spindleand with the proximate arms of said bell cranks.

5. The combination of a longitudinally shiftable sleeve having a head atits end, a spindle journaled in said sleeve and provided with a gearmounted in a recess in the head, a plate secured to said head beyond thegear, individual spindles parallel with the master spindle and journaledboth in the head and in said plate, screws mounted in the head inalinement with the respective individual spindles to take the thrustthereof, and pinions intermediately located on said individual spindlesmeshing with said ear. 4

6. The combinationwith a plurality of drills, of means for rotating saiddrills and u to support a Ija imultancou iually while rofor show L icmo: for

oositiou while the supper drawn from beheath rue ccmbin them, of :1.slide 11k in drilling posaid slide, menus for i shoulder loo;- rudiablank the slide to drilla shot, shoving ti" nally to carry ing position..11 abutment limiting this movement of the blank, means for holdingtheblank in "his position while the slide is withdrawn, and, a wed or camadapted to cause the slide to t itly clamp the blank a ainst theabutment.

8. The combination. with drills. of a slide adapted to support a blankto be drilled. a shoulder on said slide whereby the movement of theslide may shove the blank into place while it is supported by the slide.and a pivoted dog adapted to engage the article in this position andprevent its withdrawal when the slide is witlu'lrawn.

9. The combination of a slide adapted to support a blank, a shoulder on.said slide.

whereby the movement of the slide may shove the blank into place whileit sup ported, and a pair of dogs pivoted in stationary pivots andadapted to engage the orticle in this position on opposite sidcs of saidshoulder, whereby the slide mav be withdrawn from beneath the blank.

l().-. The combination. with drills and means for o )erating them, of aslide adapted to support a blank, means for guiding the blank onto theslide, means for moving the slide and at the same time shoving againstthe side of the blank, an abutment which the opposite side of the blankengages. means for locking the parts in this position.

11. The combination with drills and means for rotating and feeding them.of a slide adapted to support a blank in drilling position, a shoulderon said slide, means for shoving the slide and shoulder longitudinallyto carry the blank to drilling position, and a handle connected with theslide for moving it in and out, said handle being rotatable and.provided with an extension adapted to have a wedging action against anabutment.

l2. lhe combination with drills and means for rotating and feeding them,of a slide adapted to support a blank in drilling position, a shoulderon said slide. means for guiding the blank downward onto the slide infront of thcslwulder. means for shoring the slide and shoulderlmigitudiuully to carry the blank to drilling position. means forholding the blank in this position while llfx the slide is withdrawn,and a handle connected with the slide for moving it in and out, saidhandle being rotatable and provided with an extension adapted to have awedging action against an abutment.

13. The combination with drills and means for operating them, of a slideadapted to support a blank, -means for guiding the blank onto the slide,means for moving the slide and at the same time shoving against the sideof the blank, an abutment which the opposite sides of the blank engages,means for locking the parts in this position, means for moving the slidein the opposite direction, and means for engaging and holding the blankto prevent its retractive movement with the slide.

14. The combination with drills and means for operating them, of a slideadapted to support a blank, means for movingthe slide and at the sametime shoving against the side of the blank, means for moving the slidein the opposite direction, means for engaging and holding the blank toprevent its retractive movement with the slide, and means adapted toimpinge the blank after the supporting slide has cleared it, whereby theblank may be knocked loose and drop by gravity.

15. The combination with drills and means for operating them, of aguiding opening for blanks to be drilled, a chute above said guidecomprising a bar with a trough secured to the edge thereof, said chutedischarging into such guiding opening, a slidable device beneaththeguiding opening consisting of a supporting slide having a shoulder whichmay abut the blank, means for moving the slide longitudinally to carrythe blank to active position, and means for holding the blank in thisposition, and for withdrawing the support from beneath it when so hel16. In a machine for drilling slotted drum-like blanks, the combinationof a support for the bottom of the drum-like blank, an abutment for oneside thereof, a movable shoulder for the opposite side having a tongueadapted to enter the slot in the blank, and a magazine for carrying suchblanks one above the other comprising a bar having a rib along its edgeand a retaining wall outside of the rib.

17. In a machine fordrilling drum-like blanks, the combination of asupport for the bottom of such blank, a stationary abutment for one ofthe curved sides, a movable abutment for the other curved side, meansfor moving the movable abutment and locking it to clamp the blankbetween the two abutments, means for pressing on the other flat side ofthe blank to hold it on the supporting slide, and drills adapted toengage one of the flat surfaces and the curved surfaces of the blank,and means for simultaneously forcing said drills into the blank.

18. In a machine of the character described, the combination of a framecarrying a pair of separated ribs, a top plate projecting across theribs and having a hole through it, a slide in the space between the ribsand below the top plate, said slide having a portion of reduced heightadapted to be brought beneath said hole, there being a downward openingthrough the bottom of the groove occupied by the slide, means foroperating the slide to carry a blank dropped through said hole onto theslide to a position beneath the top plate, and over the dischargeopening, and means for preventing retraction of said blank when theslide is withdrawn.

19. The combination of a frame having a pair of separated parallel ribs,a top plate extending across said ribs and having a hole through it, aslide in the space between the ribs and beneath the top plate, saidslide carrying a ledge adapted to be brought beneath said hole orbeneath the top plate adjacent to the hole, a guide through the topplate in the latter position for a drill, and a side guide for thedrill.

:20. The combination with a pair of frame ribs spaced apart, of a topplate secured thereto and having an opening through it, a slide in thespace between the ribs and beneath the top plate, said slide having aledge adapted to carry a blank dropped through said opening, an abutmentinto which the blank may be brought by movement of the slide, the blankbeing at such time beneath the top plate, and a pair of ribs on oppositesides of the blank, said ribs having through them openings leading intothe blank and adapted to guide drills thereinto from opposite sides.

21. The combination of drills side by side, means for individuallyrotating them, means for advancing them as a unit, a pair of drills atright angles to the drills mentioned and substantially facing each otherbut out of alinement, means for advancing said latter drills toward eachother allowin one to move past the other, means for positioning a blankwhere it may be simultaneously acted on by all of said drills, and

means for simultaneously advancing said.

drills into said blank, the two drills which are opposite each otherpassing between the drills which are side'by side, said opposite drillsmoving past each other.

In testimony whereof, I hereunto afix my signature.

GEORGE T. TR'UNDLE, JR.

